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Three-dimensional (3D) printing device and method for bionic porous continuous carbon fiber reinforced ceramic bone scaffold

A 3D printing and carbon fiber technology, applied in the field of 3D printing, can solve the problems of low precision of scaffolds, difficulty in extrusion of slurry, poor mechanical properties, etc., and achieve the effects of improving biological performance, good wettability, and solving adhesion difficulties

Active Publication Date: 2020-05-19
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unique viscosity characteristics of ceramic slurry, when the viscosity of the slurry is too low, the bone scaffold cannot be molded or the mechanical properties after molding are poor; if the viscosity is too high, the slurry is difficult to extrude and the accuracy of the scaffold is low.

Method used

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  • Three-dimensional (3D) printing device and method for bionic porous continuous carbon fiber reinforced ceramic bone scaffold
  • Three-dimensional (3D) printing device and method for bionic porous continuous carbon fiber reinforced ceramic bone scaffold
  • Three-dimensional (3D) printing device and method for bionic porous continuous carbon fiber reinforced ceramic bone scaffold

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] The preparation method of continuous carbon fiber reinforced ceramic bone support comprises the following steps:

[0048] Step 1. Mix deionized water and glycerin according to the mass ratio of 7:3 to 8:2 to prepare a 100ml solution, place it in a magnetic stirrer, and stir evenly to obtain solution A.

[0049] Step 2, add polyammonium acrylate PAA-NH in solution A 4 , PAA-NH 4 The mass of the solution is 1-2% of the mass of the HA powder, stirred evenly, then measured its pH, adjusted its pH value to 9 with ammonia water, and stirred for 15 minutes to obtain solution B.

[0050] Step 3, mix solution B with HA powder, and prepare two kinds of HA suspensions with low solid ratio and high solid ratio respectively, and the solid ratio of the HA suspension with low solid ratio is 5% to 10% %, the solid ratio of the HA suspension with high solid ratio is 20%~30% (20% solid ratio, i.e. V 粉体 / (V 粉体 +V 溶剂 )=20VOL%), the two HA suspensions were ball milled at a frequency of...

Embodiment 1

[0061] The preparation method of the continuous carbon fiber-reinforced ceramic bone scaffold will be further described below in combination with examples.

[0062] The matrix is ​​made of hydroxyapatite (HA) powder, and the carbon fiber multifilament is composed of 10 carbon fibers.

[0063] Step 1. Mix deionized water and glycerol according to the mass ratio of 7:3 to prepare a solution of 100, place it in a magnetic stirrer, and stir for 15 minutes to obtain solution A.

[0064] Step 2, add polyammonium acrylate PAA-NH in solution A 4 , PAA-NH 4 The mass of the solution was 1.5% of the mass of the HA powder, stirred for 30 minutes, then measured its pH, adjusted its pH to 9 with ammonia water, and stirred for 15 minutes to obtain solution B.

[0065] Step 3, mix solution B with HA powder, prepare two kinds of HA suspensions with low solid ratio and high solid ratio respectively, the solid ratio of the HA suspension with low solid ratio is 7.5%, and the high solid ratio T...

Embodiment 2

[0076] The ceramic material uses hydroxyapatite (HA) powder, and the carbon fiber multifilament is composed of 5 carbon fibers.

[0077] Step 1. Mix deionized water and glycerin according to the mass ratio of 7.5:2.5 to prepare a solution, place the mixture of deionized water and glycerin in a magnetic stirrer, and stir evenly to obtain solution A.

[0078] Step 2, add polyammonium acrylate PAA-NH in solution A 4 , PAA-NH 4 The mass of the solution is 1% of the mass of the HA powder, stirred evenly, then measured its pH, adjusted its pH value to 9 with ammonia water, and stirred for 15 minutes to obtain solution B.

[0079] Step 3. Mix solution B with HA powder, prepare HA suspensions with low solid phase and high solid phase respectively, the range of low solid phase is 5%, and the range of high solid phase is 20%. The two HA suspensions were ball-milled at a frequency of 30 Hz for 12 hours respectively. The purpose of ball-milling was to make the slurry more uniform and disp...

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Abstract

The invention discloses a three-dimensional (3D) printing device and method for a bionic porous continuous carbon fiber reinforced ceramic bone scaffold. According to the device provided by the invention, a continuous fiber pretreatment device and a ceramic slurry extruding device are combined, so that the integrated design of the continuous fiber reinforced ceramic bone scaffold 3D printing device is realized. A fiber pretreatment material adopted by the method provided by the invention is a ceramic slurry which is the same as a base material but has lower solid content, and the ceramic slurry with lower solid content has better wettability and is not only capable of being adhered to the outer part of a carbon fiber multifilament and but also capable of permeating into the carbon fiber multifilament so as to realize adhesion, so that a biological performance of a composite material is improved.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a 3D printing device and method for a bionic porous continuous carbon fiber reinforced ceramic bone scaffold. Background technique [0002] Bioceramic materials such as hydroxyapatite and calcium phosphate have the advantages of good biocompatibility, osteoconductivity, and no side effects on the human body, so they have become important artificial bone graft materials, but the inherent brittleness of ceramic materials has greatly It has limited its wide application in the technical field of bearing capacity and high reliability. To this end, people have developed ceramic matrix composites with fibers as reinforcements to improve their mechanical properties. [0003] Carbon fiber is a high-strength, high-modulus new fiber material with a carbon content of more than 95%. It has a series of advantages such as low density, light weight, high strength, and low expans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/00C04B35/80C04B38/00C04B35/626C04B35/447A47K7/03B33Y10/00B33Y30/00B33Y40/10B33Y70/10
CPCB28B1/001B33Y10/00B33Y30/00B33Y40/00B33Y70/00C04B35/447C04B35/626C04B38/0038C04B2235/5248C04B2235/6026C04B2235/606C04B2235/656C04B2235/6562C04B2235/6567C04B35/803
Inventor 赵雪妮刘傲魏森森杨智陈雪岩郑佳梅王力宏
Owner SHAANXI UNIV OF SCI & TECH
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